I just talked to bel / escort today. I sent them my new rx65 back to see it it needs to be tweaked a bit. the man i talked to new i had some problems before with an escort 8500 x 50. the tech is going to call me back when they work on it so i can ask some questions. they do or did have some antenna problems he told me in the earlier version. i hope they can get mine back on track. i will keep all you posted.